[sac-forum] Re: Determining Position

Since I am always thinking about something like this, it just occurred to me a way I could do it. I have plenty of old style graph paper, fine divisioned and some large sheets. I could set up x & y coordinates, one for latitude and the other for longitude, plot the two points, and then draw a straight line between the two and read off latituded and longitude for the points in between. Or, and probably the best, it should be easy to get a slope for a straight line just by the theory of a regression line. For my purpose, I do not need to take into account the earth curvature since any deviation would undoubtedly be much smaller than the accuracy of a GPS - After getting the in between points I plan to go out to the field and locate them using a GPS.
Stan

Stan Gorodenski wrote:

Assume I have the latitude and longitude of two points separated by a thousand feet. I want to find the mid point on a straight line between the two, or for that matter, anywhere along the straight line. There are trees between the two points so that they cannot be seen. What is the best way to do this? Is there an easy way to do it with the GPS units?
Stan




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